/*!	 gradientset.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "layerparamset.h"
#include "valuenodeconstset.h"
#include "valuedescconnect.h"
#include "waypointsetsmart.h"

#include "gradientset.h"
#include <synfigapp/canvasinterface.h>
#include <synfigapp/main.h>

#include <synfigapp/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace synfigapp;
using namespace Action;

ACTION_INIT(Action::GradientSet);
ACTION_SET_NAME(Action::GradientSet, "GradientSet");
ACTION_SET_LOCAL_NAME(Action::GradientSet, N_("Apply Default Gradient"));
ACTION_SET_TASK(Action::GradientSet, "set");
ACTION_SET_CATEGORY(Action::GradientSet, Action::CATEGORY_VALUEDESC);
ACTION_SET_PRIORITY(Action::GradientSet, 0);
ACTION_SET_VERSION(Action::GradientSet, "0.0");
ACTION_SET_CVS_ID(Action::GradientSet, "$Id$");

Action::GradientSet::GradientSet():
    time(0)
{
}

Action::ParamVocab
Action::GradientSet::get_param_vocab()
{
    ParamVocab ret(Action::CanvasSpecific::get_param_vocab());

    ret.push_back(ParamDesc("value_desc", Param::TYPE_VALUEDESC)
                  .set_local_name(_("ValueDesc"))
                 );

    ret.push_back(ParamDesc("time", Param::TYPE_TIME)
                  .set_local_name(_("Time"))
                  .set_optional()
                 );

    return ret;
}

bool
Action::GradientSet::is_candidate(const ParamList &x)
{
    if (!candidate_check(get_param_vocab(), x)) {
        return false;
    }

    return x.find("value_desc")->second.get_value_desc().get_value_type() == type_gradient;
}

bool
Action::GradientSet::set_param(const synfig::String& name, const Action::Param &param)
{
    if (name == "value_desc" && param.get_type() == Param::TYPE_VALUEDESC) {
        // Grab the value_desc
        value_desc = param.get_value_desc();

        // Grab the current gradient
        gradient = synfigapp::Main::get_gradient();

        return value_desc.get_value_type() == type_gradient;
    }

    if (name == "time" && param.get_type() == Param::TYPE_TIME) {
        time = param.get_time();

        return true;
    }

    return Action::CanvasSpecific::set_param(name, param);
}

bool
Action::GradientSet::is_ready()const
{
    if (!value_desc || value_desc.get_value_type() != type_gradient) {
        return false;
    }

    return Action::CanvasSpecific::is_ready();
}

void
Action::GradientSet::prepare()
{
    clear();

    Action::Handle action;
    action = Action::create("ValueDescSet");

    action->set_param("canvas", get_canvas());
    action->set_param("canvas_interface", get_canvas_interface());
    action->set_param("value_desc", value_desc);
    action->set_param("new_value", ValueBase(gradient));
    action->set_param("time", time);

    if (!action->is_ready()) {
        throw Error(Error::TYPE_NOTREADY);
    }

    add_action_front(action);
}